producing trash Control-M characters

strings.

using the import function.

Backing out "dont show domains box" changes made earlier today.  It turns out that the documentation requirement that caused me to do this went away.

Continued tutorial fixes. Now it's really fixed ;-). This should complete the fixes made necessary by STXNG.

Made tutorial more robust in terms of checking to see if the examples are installed. Also fixed a bug that appeared due to recent changes in structured text.

Corrected domainSpecValidate method... it was previously failing due to improper dependency of the addr_match and host_match regexes returning an integer.

Requests for "index_html" are *sometimes* send as "index_html."
We check the user-agent and remove a trailing dot for PATH_INFO
and PATH_TRANSLATED

(needed to support Webdrive to create temporary files)

Collector 2257, rename deleted existing object before creating new object, causing manage_beforeDelete to do the wrong thing in some corner cases specific to user code which depended on it specifically *not* doing this.

Fix for dumb bug in previous fix that extended the set of characters representing an absolute and relative URL.. thanks again to Datagrok.